Flowserve Logix MD+ ValveSight - Manual (Page 84)

ValveSight™ Diagnostics DTM Manual for Logix MD+ Positioner with HART®
FCD- LGENSF0014-00
© Flowserve Corporation
84
Positioner Humidity
The Positioner Humidity box displays a scale with the actual positioner humidity and the Air
Supply Humid Warning limit. The humidity warning limit is not user settable and will be
triggered according to the rules below.
•
Temperature is less than 35 F (1.7 C) and RH > 80%.
•
Temperature is between 35 and 40 F(1.7-4.4 C) and RH > 70%.
•
Temperature is between 40 and 45 F(4.4-7.2 C) and RH > 60%.
•
Temperature is above 45 F(7.2 C) and RH > 50%.
Warnings and Alarms
Temperature High
•
Definition: The temperature of the internal electronics has exceeded
the manufacturer set limit of 85°C (176°F). High temperature may affect
performance or limit the life of the positioner.
•
Possible Solutions: Regulate the temperature of the positioner by
shading or cooling supply gas. If the temperature reading is in error,
replace the main board.
Temperature Low
•
Definition: The temperature of the internal electronics has exceeded
the manufacture set limit of -40°C (-40°F). Low temperature may inhibit
responsiveness and accuracy.
•
Possible Solutions: Regulate the temperature of the positioner. If the
temperature reading is in error, replace the main circuit board.
Air Supply Humid
•
Definition: The supply gas has high relative humidity which can lead to
condensation on electronic components and failure of electronic
functions.
•
Possible Solutions: Ensure supply gas is clean and dry. Check and
clean the regulator filter.